Braiding machine for covering wires



June 6, 1933; l H, scHwElTER )VERAIDING MACHINE AFOR COVERING WIRES 2 Sheets-Sheet 1 nu l?? .1 `1. 10 a 5 a 2f r 1 .,0 f 7 2 M Mmm m0 O U 2J l June 6, 1933. H. scHwEm-:R

BRAIDING MACHINE FOR GOVERING WIRES 2 Sheets-Sheet 2 Filed Oct. 29, 1931 Y Patented Junev, 1933 l i UNITED "STATES PATENT OFFICE Applicationled Octobr), 1931, Serial No. 571,878, and in Switzerland November 4 1930;

di My invention relates toa cover for elecbins isnecessary. The machine adapted for? tric wires, textile products and the/like Aand ther production of-my new cover hasan` uptoa machine *for` making this cover.` per path for an upper pairof bobbins, which Itis well-knownitoiprovideelectricwires, are disposed diametrically opposite, `which cables` and similar `articles with a cover path isinclined relatively to the braiding which not only serves as a rotection to axis, and a lower path Jfor a lower pair ot" the wire, cable orthe like, an iordecoradiametrically` disposed bobbins which path tive purposes, but also actsas `a carrier for 1s oppositely inclined to the braiding axis, a `insulating material.` f guide member for thewire or the like to be Such an insulating antitprotectin coveris covered extending through these two paths 00 y usually applied by means of brai ing mawhich intersect with each other at `two chines of dierent types; The-results obpoints. i l i tained by the use of braiding `machines of In order that my nventionmay be clearly the older type have proved unsatisfactory, understood andreadily carried into effect, so that frequently theyhavel been replaced an embodiment of the same is illustrated by 55 in previous years by high speed round braid- Way of example in the accompanying drawingmachinesg` Though these machines afings in which y t Y ford many advantages, the results possible lgure 1 is an elevation, partly in section, therebyare not" commensurate fwiththe great of theparts under consideration of a braidi amount lof attention and supervision deing machine adapted for the productionof 70 manded by them andtheir high initial'costs. my new cover, i i t i t Owing to the fact that` the number otbob- Figure 2 is the corresponding top view, bins has beenmaintainedinthese machines, and i i in order to obtain an appearance of the Figure 3 shows the braided cover on an braided cover similar to that produced `by enlarged scale. i y y 75 said old machines, theseyhigh speed round Referring first to Figures'l and 2, `5 debraiding machines have thedrawback-that notes the support ofthemachne in `which y the paths of both theupper and lowerbobis mounted thedriving shaft 1 which in turn bins are comparatively much? too large. By has rigidly fixed on it two bevel wheels 2 y this large path, however, the peri heral and 4 and aspur wheel 3. An annular su- 30 "speedoif the bobbin carriersis limite 1 In -perstructure 51 `is further provided on the l addition, the .braided cover produced by support 5 and has a cylindrical groove servmeans of thesemachines suers -rom` the `ingto guide a bevelwheel 6 in mesh with drawbackof having thepitch of the bobbin bevel wheel 4. `The superstructure 51 fur- 3 yarn rather high, so that the covercan easither carries two oppositely disposed carriers 55 ly be pushed backen the core wire or cable. or holders 19 and 191 having mounted on This isveryA troublesome inI installing eleceachv a rotary yarn bobbin 20.and 201, retric Wires and the like, as careful; securing y spectively The bevel wheel .6 has further ofthe cover at its ends is desired and somefixedon it two diametrically opposite yarn times necessary; l guides'21 and 22 with eyes23 and 24 re- 9o In the braided cover forming thesubject-` spectively. The groove guiding bevel Wheel matter of my present `invention `all these 6 is slightly inclined to the vertical braiding drawbacks are overcome. Thisobject is aXS. i o achieved by the `:tact that two cover layers A carrier 7 is mounted on support 5 and at having opposite winding direction are made the top forms a segment 52 or piece having a 95 to interlace only attwo diametrically oppo-l guide `groove 71: By a continuation of segsite places. ment or `piece 52, likewise having a guide y y Only a small number of bobbinsis regroove 53,`thissegmentis completed toacircuquired for the production of this braided lar member which is interruptedonly at two work and only a very small path for the bobplaces 38 and39, see Figure 2. The guide 100 grooves 71 and 53 serve to guide and secure in position two diametrically disposed toothed segments 26 and 27 which are driven by bevel gears 8, 9, 11, 13, 14, 515, 14', 15', 16 and 17 mounted on carrier 7 and .piece 52. The vgears 8 and .9 being I'ixed on a `common Ivertical shaft 10. The gears 14, 15 and 14', 15 aredisposed symmetrically with respect to their common driving gear 13. The 'bevel gear 17 is made in one piece with a spur wheel 16 in mesh with spur wheel '3' mounted on the .driving shaft 1. The lengths .of the toothed segments 26 and 27 are so designed that Seach Aoit' these ,segments arealways in mesh -witlione of the-bevelsgears `13, :15, .,-or .5137. Eachtoothed 'segment 26,27 carriesabobbin carrier orholder 28 and 281, respectively, with a rotary yarn bobbin 29 Yand l291 thereon,fand^a lyarn guide 30,?31, frespectively 'withfguideeyes32, 33.

The braiding axisis 'formed by a vertical ltubularfmeniber 34'having a disc-'shaped top shown) serves to ffeed the wire 36 or other ilamentary core to be covered at therefquired speed yfrom ibelowfin an upward'direction 'through ithe'tubular piece 34. The place 37 Kwhere'the yarn is applied to the core is the pointof intersection of the-axis of the path controlled by guide .grooves 71 Vand 53 with the axisfof kthe path controlled -by the structure51. Now the1ideal Alength ofthe'yarnguides :21 and 22a-nd 30rand 31 for the guide eyes 23, 24 a1id32, 33 would besuch thatfthe field of motion of :the eyes would coincide in a common plane passing throughfthe above `point of intersection. As this is impossible, owing to the yeyes inten feringiwith one another, care vhasto'be vtaken that'this videal condition is vulilled at least approximately, yin order to obtain Ias Afar-as :possible a constant Ilength'of the \yarn be- -tween point 37 and tlie'revolving gyarn guide eyes. Since the segmentorpiece z'has vthe above-described gaps 38, 39, the yarn.l guides '.21 and 22 aref allowed to ypass through them in their circular fpath. 'When -theidriving :shaft 1 revolves 2to the fright lor left, the 'bevel lwheel 6 with Ythecyarn guides 21, 22 -thereon revolves always voppositely to the two segmentsI 26, 27 withthe'yarnguidesBO, 31 thereon. f

With my new 'machine described vhereinbefore the braiding operation is as Jfollows: `Thetwobobbins 29,291 of the upper circular path 52, 71 and the two bobbins 20, 201 of the lower :path 5 revolve inopposite directions of rotation. As the wiref36ortthe :like is fed fand as a 'resultof the `inclined vposition of the fbobbin paths relatively -to 'the wiretheftwo yarns w, w1, VFigure -3,of the'two upperirevolving bobbins-.are applied to i thewire inmightlhand direction Iwhile Athe yarns Zi, b1 coming from the lower oppositely =piece 35. A `suitable feeding device l(not revolving bobbins are wound in left-hand direction. As the yarn guide eyes of the two lower bobbins 20, 201 cross the path of the two upper bobbins 29, 291 on diametrically opposite places, an interlacing of the twoyarns is produced at these places in such a manner that lthe two windings come to lie alternately on the wire'36 and on 'the opposite side of the yarns or windings of the upper or lower bobbin group. Figure 3 clearly shows these interlacing places of the yarns^a,-'a,1 and 5,51.

In consequence ofthe slight pitch of the individual yarns -vand their diametrical interlacing thecover cannot be pushed away on thewire and canbe removed only by removing :the individual yarns therefrom. Any securing of'the cover at the ends is 4thereforenot necessary. Furthermore, due" .to the cover being vinterlaced only at two diametrically opposite rplaces yarn material Ais saved, `since the many former. crossing places are dispensed with.

It ymay still be noted that the described cover may be used not only as an insulating klayer ibutalso `for many other purposes oclcurrin'gin-the textile industry. y

Whatllclaim and desire to secure by Letvters Patentis 1. A -machine for producing a braided coverupon a ilamentary core comprising an upper ,pair of bobbin holders disposed diametrically oppositely, means for rotating said holders in a path inclined relatively to 4theaxis'of said core, a lowerpair of bobbin holders disposed diametrically oppositely,

rotating holders relatively to the axis of said-core, a yarnguide'associated with each of said'bobbin holders, and means for'guiding'the filamentary core to be covered substantially 'transversely through both of said fpaths. Y

2. AA .-machine for producing la braided rcover upon a riilamentary core comprising V'an upper xpair of bobbin yholders disposed I diametricallyl oppositely, means for rotating Vsaid holders in a kpath Vinclined relatively -to the axis of said core, a lower vpair of bobbinholders disposed diametrically oppositely, means for rotating said last-men" -tioned holders in a direction opposite to said rst-mentioned holders and in a path inclined oppositely to the path of said firstmentioned` rotating holders relatively to the axis of said core, yarnguides associated with each of saidbobbin holders terminating approximately in a common plane, and means for guiding the ilamentary core to be covered substantiallytransversely through both 3. In a machine 'for producing a braided cover upon a filamentary core, a lower pair of bobbin holders, yarn guides associated with said bobbin ho ders, a frame for supporting said lower pair of bobbin holders and yarn guides, means for rotating said frame and yarn slightly inclined relatively to the axis of said core, an upper pair of bobbin holders, yarn guides associated with said last-mentioned bobbin holders, a second frame for supporting said upper pair of bobbin holders and arn guides, means for rotating said bobbin elders and yarn guides in a direction oppositeto said first-mentioned holders and in a path inclined oppositely to the path of the first-mentioned frame and yarn guides, said second frame furthermore having ftwo gaps therein for the passage of said first-mentioned yarn guides therethrough, and means for guiding the ilamentary core to be covered substantially transversely i through both of said paths.

"aol

i Zurich, Switzerland this sixteenth day of Y 4. In a machine for producing a braided cover upon a filamentary core, a lower pair of bobbin holders, yarn guides associated with said bobbin holders, 'an annular frame for supporting said lower pair of bobbin holders and yarn guides, means for rotating said frame and yarn uides thereon in a path slightly inclined re atively to the axis of said core, an upper pair of bobbin holders, yarn guides associated with said last-mentioned bobbin holders, rotatable segments each carrying a bobbin holderand appurtenant yarn guide, a second frame for supporting said `rotatable segments, means for continuously rotatingl said segments with said bobbin holders and yarn guidesthereon in a direction opposite to said first-mentioned holders and in a path inclined oppositely to the path ofthe irst-mentioned frame and yarn guides, said second ramefurthermore having two gaps therein for the passage of said first-mentioned yarn guides therethrough, and means for guiding the filamentary core to be covered substantially transversely through both .of said paths.

The foregoing specification signed at October 1931. y

l HANS SCHWEITER.

guides thereon in a path v 

